Stone-cutting machine.



Patented May 5, 1914.

2 S EET B-SEEET l.

Witnesses athwnu COLUMBM PLANOGRAl-H co.. WAS

E. A. CHASE.

STONE CUTTING MACHINE.

APPLIOATION FILED 13:50.21, 190s. RBNEWED SEPT. 1. 1911.

Patented May 5, 1914.

2 SHEETS-SHEET 2.

UNTTEB STATES PATENT @FETCH ELROY A. CHASE, OF NORTHFIELD, VERMONT,ASSIGNOR, BY MESNE ASSIGNMENTS,

TO AMERICAN GRANITE SAW COMPANY, OF KITTERY,

OF MAINE.

MAINE, A CORPORATION STONE-CUTTING MACHINE.

Application led December 21, 1908, Sera] No. 468,568. Renewed September1, 1911.

To all whom t may concern.'

Be it known that I, Elinor A. CHASE, a citizen of the United States ofAmerica, residing at Northfield, in the county of lvlashington and Stateof Vermont, have invented certain new and useful Improve ments inStone-Cutting Machines, of which the following is a full, clear, andexact specification.

rThis invention relates to improvements in stone-cutting machines andhas for its primary object the provision of a machine in which a gang ofreciprocating cutters may be utilized in such a manner as to produce aperfectly true and Straight cut.

.Vith this object and such other incidental objects as hereinafterappear in view,` the invention consists in certain novel features of theapparatus illustrated in the accompanying drawings, all of which will behereinafter first .fully described and then )articularly pointed out inthe claims.

In the said drawings, Figure 1 is a view partly in elevation and partlyin longitudinal section of an apparatus embodying my in *ention Fig. 2is a rear end view of thiem'e. Fig. 3 is a perspective view of de-Vtails hereinafter described.

The main frame, 1, may be of any suitable construction and is ofsufficient width to eX- tend over a track, 2, upon which trucks or cars,3, carrying the stone, travel so as to feed the stone blocks to thecutters. The trucks or cars are preferably composed of a lower platform4L provided with wheels or rollers, 5, by which it is movedlongitudinally over the track 2. Upon the upper side of the platform et,I provide trans- Y verse guides or rails, 6, on which an upper platform,7, is mo-unted by means of roll-- ers or wheels, 8, so as to travellaterally with respect to the main frame and the track 2. Any suitableform of power may be ap plied to the lower platforms to move them alongthe main track but the Lipper platforms are preferably moved across thelower platforms by means of threaded collars or nuts, 9, on theunderside of the upper platforms engaging worms or screws, 10, mountedtransversely on the lower platforms and having beveled pinions, 11, atone end, the said beveled pinions meshino' with similar pinions, 12, onshafts, 13, which are mounted longitudinally on the side of the lowerSpecification of Letters Patent.

Patented May 5, 191 al.

Serial No. 647,225.

platform or truck and provided with operating' cranks Or handles, 14.

The main frame is constructed of posts, 15, braces, 1G, bearing againstthe posts, and transverse and longitudinal beams, 17, 18, connecting'the posts, the several parts being firmly secured together by means oftie rods or trusses, as will be readily understood. Mounted in thetransverse beams and arranged adjacent to the posts, are screw rods, 19,provided with bevel pinions, 20, on their upper ends which mesh withsimilar pinions, 21, rigidly secured on the shafts, 22, mounted on theupper sides of the transverse beams and carrying band pulleys, 23, atone end to which power may be applied from the driving engine. rThelower en ds of the screws 19 engage the box-es or nuts, 24, so that therotation of the vscrew rods will cause the said nuts or boxes to move upor down and they are guided in their vertical movement by ways orguides, 25, secured to the posts and with which they engage. Pivotallysecured to the nuts 2st and projecting above the same are brackets, 26,which are formed with dovetailed ribs or cleats on their upper sides andthese dovetailed ribs or cleats are engaged by slides on the undersidesof longitudinal beams, 27, of an adjustable supporting frame, theremainder of said frame consisting of lower longitu` dinal beams, 2S,and rigid transverse beams, 29, inclined slightly edgewise and securedto and connecting the said beams 27 and 2S. Upon the upper and loweredges of the transverse beams 29 are secured grooved inclined bracketsor lugs, 30, in which the cutter frame is mounted. This cutter frameconsists of two rectangular end members mounted to slide in the groovedbrackets 30 and consisting of the rails, 31, engaging t-he brackets andthe posts, 32, connecting the rails. The posts 32 are extended below thelower slides and to the said depending eX- tended ends, clamping bars,3:3, are secured, the said clamping bars being disposed hori Zontallywhen in their normal position. The two end members of the cutter frameare connected by a beam or connecting bar, 34, and the cutters orblades, 35, are secured by and between the clamping bars 33. Movement isimparted to the cutter frame and the cutters carried thereby through themedium of a pitman, 36, pivotally attached to the said traine at one endand having its other enc attached to a crank, 3T, mounted on the maintrame and driven from the engine or other motor.

It will be readily seen from the -foregoing description, taken inconnection Wit-l1 the accompanying drawings, that the cutters will be sodisposed as to cut into the stone obliquely and consequently the largeblocks may be fed through the machine continuas each blade or critter'Will cut slightly er than the cut-ter preceding it so that the bloelrwill be cut through i'rom topy to bottom as it passes through themachine. T he arrangement also assures a straight cut as each blade willfollow the path marked out 'for it by the preceding cutter. The screwrods and adjustable trame, however, provide means i'or tilting thecutter trame te a differeutangle so as to Worlr on a larger or smallerblock and the ends of the adjustable trame may be set at differentheights so as to accommodate small stones in which shallow cuts are tobe made` Parallel kerts may be made in the blocks by running themthrough the machine to maire an initial hert and then adjusting theupper platforms or cars transversely aitter Which they may be drawnthrough the machine to receive a second cut parallel with the rst cut.

liaving thus described my invention, What claim and desire to secure byLetters aient is l. In a stone sawing machine, the conibination ot alool supporting frame, a plurality ot cutters arranged edgewisely inalim-meut. in said iframe, means 'for effecting a relative ifeedmovement between the stone and the cutters, and means whereby the tramemay be adjusted so that the line at which the cutters act can be variedrelatively to the line. ot feed, and the machine may be thereby adaptedto cut stone ot different thicknesses.

Q. The combination ot iiltahle trame supported thereon, a. cutter trameslidably mounted on said tiltable traine and provided with a series ofdepending cutters, means `tor reciprocating said cuta main fra-ine, a

ter frame, and means tor causing said cutter frame to Work in an obliqueline of travel with reference to the tiltahle trame when reciprocated.

3. The combination. ot' a supporting trame, a cutter Jframe havingdepending cutters gradually increasing in length toivard the rear end ofthe cutter traine, guides on the supporting trame 'for said cutteriframe inclined longitudinally With respect to the supporting trame,means for reciprocating said cutter traine, and means for feeding stonelongitudinally under said cutter trame.

4. rlhe combination of a supporting trame, a cutter trame havingdepending rigid cutters gradually increasing in length toward the rearend of the cutter frame, guides on the supporting frame for said cuttertrame inclined longitudinally with respect to the supporting trame,means tor reciprocating said cutter -trame, and means for feeding stonelongitudinally under said cutter trame.

5. in an apparatus of the class described, means tor moving the stone, aframe thereover, a supplenental trame supported in sai d frame, meansfor raising and lowering each end ot said frame independently, guides onsaid tiltable :traine inclining in the direction ot movement of the saw,an obliquely slidable saw frame mounted in said guides and carrying aseries of depending saw teeth, and means for reciprocating said sawtrame.

G. stone cutting machine comprising fixed uprights, a Werk support, atool support tiltably mounted on said uprights, a series of tools .inedge-Wise alinement mounted on said tool support, and means foradjusting said tool support relative to said Work supportl to bring` theoperative portions of the several tools to diiierent angles relative tothe Work support.

ln testimony whereof I have signed my naine to this specification in thepresence of two subscribing Witnesses.

ELROY A. CHASE.

llVitnesses 1 M. D. SMITH, ALEX. Ennis.

Gopes of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

